After the election of Ratzinger as the Pope this road of around 224 km was created. It passes through some towns which are in some way related to the Pope or the Catholic Church, such as Altötting, Marktl am Inn or Traunstein.

Burghausen has the largest castle in Europe, 1,043 m. Worth paying for the tour because they explain the history of the castle. It is quite interesting. It's curious that today there are still people living in houses inside the castle.